Battery name: Original Sanyo 18650 (guaranteed original) Japan production Battery material: Lithium ion battery (Li-ion, Lithium Ion Battery) Battery Brand: Sanyo Battery Model: 18650 Battery Specifications: f18 * 65 (mm) Battery capacity: 2600MAH Weight: 45g Internal resistance :35-50mO Charge and discharge times: 1000 Battery voltage: 3.6-3.7V standard voltage Washed over power after the voltage up to 4.2V End of electrical discharge voltage to 2.75V Features: High safety performance, no explosion, no combustion; non-toxic, pollution-free, RoHS certification; consistency, long life cycles more than 1000 times; performance of high temperature, 65 degrees under the conditions of discharge efficiency of 100%; use the charge current should be less than 2200mAh (1C). Resistance to overcharge: Charging voltage of 4.3V, charging the length of time without problems. NOTE - AUCTION IS FOR ONE BATTERY ONLY THESE ARE GENUINE 2600mah BATTERIES NOT THE OVER LISTED mah CHINESE COPY BATTERIES